Non-Volatile Medium Controller Interface Timing
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Solution Overview
Problem
Existing non-volatile medium storage systems face challenges in accommodating longer and variable read and write latencies, particularly with advanced encoding techniques, which prior art interfaces struggle to support effectively.
Innovation Solution
The introduction of a hard disk controller, read/write channel device, and interface that utilize specific signals such as write and read gate signals, along with iterative encoding and decoding processes, to manage and write data to non-volatile media, accommodating longer and variable latencies, and supporting split sectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If advanced encoding techniques are used to improve data storage reliability, then manufacturing precision is improved, but read and write latency increases and becomes variable
Solution Approach 1:
The patent implements preliminary actions by pre-positioning data in buffers before actual write operations and pre-loading data into caches before read operations. The controller prepares data packets in advance and uses look-ahead buffering to anticipate upcoming read/write requests, thereby reducing the impact of encoding/decoding latency on overall system performance.
Solution Approach 2:
The patent employs dynamic latency compensation mechanisms that adjust timing parameters in real-time based on actual encoding/decoding speeds. The controller dynamically modifies write and read timing signals to account for variable latencies introduced by advanced encoding techniques, ensuring synchronized data transfer despite varying processing speeds.
2Manufacturing precision
If advanced encoding techniques with longer latencies are implemented, then data storage reliability is improved, but the interface complexity increases
Solution Approach 1:
The patent introduces intermediary buffering layers between the host interface and the encoding/decoding circuits. These buffers act as mediators that decouple the timing requirements of the host system from the variable processing speeds of advanced encoding techniques, simplifying the overall interface design by absorbing timing variations rather than requiring complex synchronization logic throughout the system.
Solution Approach 2:
The controller implements self-service mechanisms by automatically adjusting timing parameters and managing buffer allocations based on detected latency patterns. The system monitors its own performance and dynamically reconfigures interface parameters without external intervention, reducing the need for complex external control logic while maintaining reliability with advanced encoding.
3Adaptability or versatility
If variable latency is accommodated to support advanced encoding, then adaptability is improved, but productivity decreases due to slower data transfer
Solution Approach 1:
The patent maintains continuity of useful action by implementing overlapping operations where encoding of outgoing data begins before previous data transfers complete, and decoding of incoming data starts before complete reception. The pipeline architecture ensures that the controller is continuously productive by preparing next operations in parallel with current transfers, minimizing idle time despite variable latencies.
Solution Approach 2:
The system performs preliminary actions by pre-processing data packets, pre-allocating buffer spaces, and pre-synchronizing timing signals before actual data transfer begins. This advance preparation reduces the critical path duration during actual transfer operations, maintaining higher effective data throughput while accommodating variable latencies from advanced encoding techniques.
Data Source
AI summary
In a method for causing data to be written to a non-volatile medium, first data to be encoded and written in a sector of the non-volatile medium as a codeword is transmitted to a write or read/write channel device, and a write gate signal corresponding to the sector is asserted. Asserting the write gate signal indicates to the write or read/write channel device when to write the codeword to the sector. While asserting the write gate signal to cause the codeword to be written, second data to be encoded and written to the non-volatile medium is transmitted to the write or read/write channel device.